WO2017121799A1 - System, cartridge, beverage preparation unit and method for producing a beverage - Google Patents

Abstract

Disclosed is a system for producing a beverage, in particular a cold beverage, comprising a cartridge that has a reservoir filled with a beverage substance, a beverage preparation unit with a cartridge receptacle into which the cartridge can be reversibly inserted, and a cartridge discharge device which causes at least partial transfer of the beverage substance from the reservoir into a mixing chamber; furthermore, the beverage preparation unit comprises a fluid supply which opens into the mixing chamber, or the system includes a movable plunger which is placed inside the reservoir and can be transferred from a starting position into a final position by means of the cartridge discharge device.

Description

 DESCRIPTION

Title system, cartridge, beverage preparation unit and

 Process for making a beverage

PRIOR ART The present invention is based on a system for producing a beverage, in particular a cold drink, comprising a cartridge which has a reservoir filled with a beverage substance, and a beverage preparation unit with a cartridge receptacle in which the cartridge can be inserted reversibly, and with US Pat a cartridge unloading device, which causes at least partial transfer of the beverage substance from the reservoir into a mixing chamber.

Such systems are well known in the art and are used to make beverages from pre-portioned cartridges. The production of beverages with such systems is extremely convenient for the user since he only needs to insert a cartridge and press a start button. The beverage preparation unit then takes over fully automatically the production thereof, ie in particular that the beverage substance is mixed with a predetermined amount of liquid, in particular cold and carbonated water, and is passed into a drinking vessel. In this way, especially mixed drinks for the user can be made much easier, faster and with less effort. The user can choose from a variety of different cartridges, so that he can produce different drinks as desired.

A major challenge with such systems is to safely and completely prevent recontamination of the beverage preparation unit during the manufacture of the beverage, otherwise there is a risk of contamination, including mold formation within the beverage preparation unit. This applies in particular to cartridges containing fructose, alcoholic or milk-containing beverage substances. In systems known from the prior art, the cartridge is usually inserted into the cartridge receptacle and the cartridge is opened on both sides, ie on an inlet side and on an outlet side. On the inlet side, it is then Idzuführung water introduced into the cartridge, so that the drink already forms by mixing the beverage substance with the water within the reservoir in the cartridge. On the outlet side, the beverage leaves the cartridge and is directed to a drinking vessel. The water flows through the reservoir here completely and thus causes a discharge of the beverage substance from the reservoir. It has been found that when the water is introduced directly into the reservoir filled with the beverage substance, recontamination of the feed can not be completely prevented, because the reservoir is usually completely filled with the beverage substance and thus an increase in pressure takes place in the reservoir when the water is introduced. Both this increase in pressure in the reservoir and the flushing of the reservoir ensures that during and / or shortly after the beverage production smallest drops, particles and / or suspended matter of the beverage substance enter the fluid supply and lead there to a continuous contamination. Disclosure of the invention

It is therefore an object of the present invention to provide a system for producing a beverage of the type mentioned above, in which a recontamination of the beverage preparation unit is effectively avoided.

This object is achieved by a system for producing a beverage, in particular a cold drink, comprising a cartridge having a reservoir filled with a beverage substance, and a beverage preparation unit with a cartridge receptacle, in which the cartridge is reversibly insertable, and a cartridge unloading, wel an at least partial transfer of the beverage substance from the reservoir into one

Mixing chamber causes, wherein the beverage preparation unit further comprises a fluid supply, which opens into the mixing chamber.

The system according to the invention has the advantage over the prior art that the fluid supply does not open into the reservoir of the cartridge but into the mixing chamber. As a result, it is effectively and effectively prevented in a simple and cost-effective manner that an excessively large or even an overpressure builds up in the reservoir. Also, the reservoir is not flushed (completely) by the fluid, but the system is designed such that the beverage substance and the fluid enter the mixing chamber separately from one another. The fluid thus enters the reservoir independently of the reservoir

Mixing chamber. It could also be said that the reservoir is "fitted" by the fluid supply, and it has been shown that this causes recontamination of the beverage additives. preparation unit is prevented in a much more effective compared to the prior art way.

Another object or a preferred embodiment of the present invention for achieving the above object is a system for producing a beverage, in particular a cold drink, comprising a cartridge having a reservoir filled with a beverage substance, and a beverage preparation unit with a cartridge receptacle into which the cartridge is reversibly insertable, and a cartridge unloading device, which causes at least partial transfer of the beverage substance from the reservoir into a mixing chamber, the system having a movable piston which is disposed within the reservoir and by means of the cartridge unloading from a starting position in an end position is transferable.

According to the invention, the cartridge discharge device in the form of the movable piston is used to transfer the beverage substance from the reservoir into the mixing chamber by transferring the piston from the starting position to the end position. The system according to the invention has the advantage over the prior art that the fluid which is introduced to produce the beverage and mixed with the beverage substance is not used, as in the prior art, for transferring the beverage substance. In this way, the risk of recontamination of the beverage preparation unit and in particular the fluid supply is eliminated. In particular, the movable piston is part of the cartridge, so that no parts of the beverage preparation unit come into contact with the beverage substance for transferring the beverage substance into the mixing chamber.

According to a further preferred embodiment of the present invention it is provided that the piston is arranged in the starting position near the input side and wherein the piston is displaced in the end position in the direction of the output side. In this way, almost the entire amount of the beverage substance can be pushed out of the reservoir by moving the piston from the starting position to the end position. The piston is preferably arranged as part of the cartridge permanently in the reservoir. Alternatively, of course, it would also be conceivable that the piston can be inserted into the reservoir as part of the cartridge unloading device after the cartridge has been inserted into the beverage preparation unit. The reservoir preferably comprises a cavity delimited by a cylindrical wall, wherein the piston has a circular outer contour whose outer diameter corresponds approximately to the inner diameter of the cylindrical wall or is only slightly smaller. Preferably, the piston comprises a Sealing device, in particular in the form of a flexible circumferential sealing lip, which seals a narrow gap (resulting from the difference between the inner diameter of the cylindrical wall and the outer diameter of the piston) between a wall of the reservoir and the piston. It is conceivable that the sealing lip is made of a reversibly elastic material, whereby the sealing lip conforms sealingly against the inside of the wall. For example, the sealing lip comprises an elastomer, rubber, neoprene, rubber, polyurethane, soft PVC (polyvinyl chloride with up to 40% plasticizer) or the like. According to another preferred embodiment of the present invention, it is provided that the cartridge unloading device comprises a movable plunger, which is insertable on an input side of the cartridge in the cartridge to press the beverage substance on an output side of the cartridge from the cartridge. Preferably, the cartridge-side end of the plunger for cooperation with the piston arranged in the cartridge is provided such that upon insertion of the plunger into the cartridge, the plunger strikes the piston in the initial position and is then moved from the plunger to the end position. Advantageously, the beverage substance is thus transferred from the reservoir into the mixing chamber, without the plunger coming into contact with the beverage substance. The plunger can thus be part of the beverage preparation unit and be used again, while the contaminated piston is part of the cartridge and thus exchanged when the cartridge is replaced. Recombination of the beverage preparation unit is thus effectively prevented. Before removing the spent cartridge from the beverage preparation unit, the plunger is in particular pulled back and out of the cartridge again.

Alternatively, it would also be conceivable in principle that the cartridge-side end of the plunger has the piston. In this case, the piston would be part of the beverage preparation unit and not the cartridge. However, this solution is less preferred because of the risk of recontamination. In return, this solution is cheaper but to realize because the piston is not a disposable product here.

According to a further preferred embodiment of the present invention, it is provided that the cartridge in the region of the insertion side has a sealing element which is opened by the insertion of the piston, wherein in particular the sealing element comprises a sealing film which enters during insertion of the piston. The sealing element preferably ensures that the reservoir is hermetically sealed, at least before insertion into the beverage preparation unit, no beverage substance can escape and that Aroma of the beverage substance during storage and transport of the cartridge is maintained. Preferably, the sealing film is arranged such that the piston is arranged in the starting position between the sealing element and the beverage substance, so that the sealing film is torn during insertion of the plunger from the plunger. The cartridge is preferably opened automatically on its input side by the insertion of the plunger. Alternatively, it would also be conceivable that the sealing film is arranged between the piston arranged in the starting position and the beverage substance, so that the sealing film is torn by the moving piston during insertion of the tappet. According to a further preferred embodiment of the present invention, it is provided that the beverage preparation unit has a guide unit for motor-driven supply of the plunger into the cartridge, wherein the guide unit comprises the plunger a rectilinear or curved guide element for insertion of the plunger and wherein the guide unit comprises a linear electric motor. Advantageously, thus the ram can be motor driven inserted into the cartridge. In this case, the user needs to initiate the insertion merely by pressing a button or the like. The use of a curved guide element has the advantage that the overall height of the guide unit can be reduced. The plunger is preferably made flexible in this case. Otherwise, he is particularly rigid or semi-rigid. The electric linear motor preferably comprises a pinion, which sits on a drive shaft of an electric motor (for example, a three-phase asynchronous machine or a three-phase synchronous machine) and engages in a rack, wherein the rack is coupled to the plunger or is already part of the plunger , By turning the pinion, the rack is moved and thus the plunger moved into the cartridge or moved out of the cartridge. Alternatively, it is also conceivable that the aforementioned electric drive comprises an electromotive spindle drive, in which a spindle is moved translationally by means of a pinion, wherein the spindle is coupled to the plunger or is already part of the plunger. Alternatively, the linear electric motor includes a solenoid linear motor. The person skilled in the art recognizes that a hydraulic linear motor could also be used instead of the electric linear motor.

Alternatively, it is provided that the cartridge unloading device comprises a compressed air source for injecting compressed air into the reservoir on an input side of the cartridge, wherein the system is in particular designed such that the beverage substance is pressed directly out of the reservoir by the compressed air or by the compressed air the piston is transferred from the starting position to the end position. Instead of the above-mentioned solution with an electric or hydraulic linear motor is also conceivable, the Beverage substance directly by compressed air from the reservoir into the mixing chamber to press (the compressed air is introduced here on the input side directly into the not provided with a piston reservoir) or indirectly for this purpose to transfer the piston by means of compressed air from the starting position to the end position (this is the Compressed air on the inlet side into the reservoir and introduced above the piston). Advantageously, in both variants by the use of compressed air (in particular instead of the plunger) the risk of recontamination is most of all reduced. It is conceivable that the beverage preparation unit here is equipped with a compressed air cartridge, which is changed if necessary. Alternatively, it would also be conceivable that the beverage preparation unit for providing compressed air is equipped with a corresponding compressor. In the event that the beverage preparation unit anyway has a carbonator comprising a C0 ₂ cartridge, preferably this C0 ₂ cartridge is also used as a compressed air source for the cartridge unloading device. Alternatively to the use of compressed air, the use of negative pressure is conceivable. In this alternative embodiment, the cartridge unloading device has a vacuum device for sucking the beverage substance from the reservoir by means of negative pressure, wherein the system is designed in particular such that the beverage substance is sucked directly from the reservoir by the negative pressure or by the negative pressure of the piston of the starting position is transferred to the end position.

According to a further preferred embodiment of the present invention, it is provided that the mixing chamber has a beverage outlet, through which the beverage formed from a mixing of the beverage substance with the fluid is discharged, the system is preferably designed such that the beverage from the beverage outlet directly into a portable vessel can be introduced. In an advantageous manner, neither the beverage substance nor the beverage mixed in the mixing chamber thus comes into contact with further parts of the beverage preparation unit, so that the return contamination is excluded. This is the case in particular when the mixing chamber is part of the cartouche and is thus exchanged as an exchange product after each beverage production process.

According to another preferred embodiment of the present invention, it is provided that the fluid supply is supplied with fluid, which is cooled by a cooling unit, wherein the cooling unit is part of the beverage preparation unit or of a separate refrigerator in operative connection with the beverage preparation unit. In this way, cold drinks can advantageously be produced, even if the cartridge is not removed. is cool and, for example, has room temperature. The integration of the system into an existing refrigerator has the advantage that the existing refrigeration unit of the refrigerator for the beverage preparation unit can be easily shared in an efficient manner. Particularly in the case of so-called "side-by-side" refrigerators (often also referred to as American refrigerators), there is sufficient space in the front for integrating the system, and it is conceivable that the beverage preparation unit is a retrofit set for one The cooling unit preferably comprises a compressor cooling unit, an absorber cooling unit or a thermoelectric cooler According to a further preferred embodiment of the present invention it is provided that the fluid supply is supplied with fluid which is carbonated by a carbonator Preferably, the carbonator is part of the beverage preparation unit, wherein the carbonator in particular a receptacle for a C0 ₂ cartridge and a feed device for displacing the fluid with C0 ₂ from the C 0 ₂ cartridge.

According to a further particularly preferred embodiment of the present invention it is provided that the mixing chamber is formed as part of the exchangeable cartridge. In this way, contamination of the beverage preparation unit by the beverage substance is effectively avoided because only parts of the disposable replaceable cartridge come into contact with the beverage substance. Preferably, a further sealing element is arranged between the reservoir and the mixing chamber, which is opened when inserting the cartridge into the cartridge receptacle or when activating the cartridge unloading device. The further sealing element serves to close the cartridge on the output side during transport or storage aroma-tight. On the input side, the cartridge is sealed in an aroma-tight manner, in particular by the sealing element described above, so that the reservoir is completely closed in an aroma-tight manner before the cartridge is inserted into the cartridge receptacle and in particular before the start of the beverage production process, which, for example, results in a long shelf life of the cartridge achieve. It is conceivable that the further sealing element comprises a sealing film, which is opened by a pressure increase in the reservoir during transfer of the piston from the starting position to the end position and in particular ruptures. Advantageously, in this system, the further sealing element is automatically opened during the production of the beverage. The mixing chamber formed as part of the cartridge preferably has a quick coupling for connecting the mixing chamber to the fluid supply when the cartridge is inserted into the cartridge receptacle. In this way, the mixing chamber is automatically brought into fluid communication with the fluid supply during insertion. In particular, the quick coupling has a coupling neck and a coupling receptacle receiving the coupling stub in the coupled state, wherein the coupling stub and / or the coupling receptacle comprises a seal and / or wherein the coupling stub engages latching in the coupling receptacle in the coupled state and / or wherein the coupling stub part of the Beverage preparation unit and the coupling receptacle part of the mixing chamber is. It is conceivable that the quick coupling comprises a plug-in coupling, mono-coupling, multi-coupling, clean-break coupling, coupling, through-coupling and / or through-coupling.

In accordance with a further particularly preferred embodiment of the present invention, it is provided that the cartridge receptacle has a form-locking element which receives the cartridge in a form-fitting manner, wherein the cartridge is preferably additionally held positively in the cartridge receptacle. It is conceivable, for example, that the form-locking element comprises at least one spring and / or latching element which is compressed by inserting the cartridge into the cartridge receptacle and / or locks, wherein the cartridge receptacle preferably has an insertion bevel and / or positioning. The cartridge receptacle preferably has an upper form-locking element, which holds the cartridge in the region of its inlet side, and a lower form-fitting element, which holds the cartridge in the area of the outlet side and / or the mixing chamber.

Preferably, the cartridge receptacle is designed such that the cartridge between the upper form-fitting element and the lower form-fitting element can have a diameter which is greater or smaller than the diameter in the region of the upper and lower form-fitting element. In this way, cartridges can be used which, at least in their intermediate region, ie in those regions in which the upper and lower interlocking elements do not attack, have different geometrical configurations. Thus, in particular cartridges can be used with reservoirs of different volumes. For example, for beverage containing liquor, cartridges containing smaller amounts of beverage substance can be provided than for alcohol-free caffeinated and carbonated soft drinks. The skilled person understands that the mixing chamber could alternatively also be part of the beverage preparation unit. In this scenario, after the preparation of each drink, the mixing chamber would have to be rinsed with water so that no residues of the beverage substance remain in the mixing chamber.

According to another particularly preferred embodiment of the present invention it is provided that within the cartridge, a shielding member is arranged, on which the cartridge unloading device acts to transfer the beverage substance from the reservoir into the mixing chamber, wherein the shielding element between the cartridge unloading device and the beverage substance arranged is. Advantageously, the cartridge unloading device is isolated from the beverage substance by means of the shielding element, so that no recontamination of the beverage preparation machine can take place via the cartridge unloading device. In order for it nevertheless to be possible to empty the reservoir, the shielding element is flexible and, in particular, designed as a bellows or flexible bag element. The shielding element is always disposed within the reservoir, wherein the beverage substance is arranged within the bellows or the pliable bag element. When the cartridge unloading device, ie in particular the plunger or the compressed air act on the bellows or the bag element, then the bellows folds together within the reservoir or the bag element is compressed within the reservoir, so that the beverage substance is transferred from the reservoir into the mixing chamber , In other words, in the initial state, the bellows or flexible bag element extends from the exit side of the cartridge at least partially parallel to the cartridge wall to the inlet side of the cartridge and is moved by the cartridge unloader in the direction of the outlet side during the beverage production process.

Another object of the present invention for solving the problem formulated at the outset is a cartridge for the particular system according to the invention for producing a beverage, wherein the cartridge can be inserted into the cartridge receptacle of the beverage preparation unit and wherein the cartridge has the reservoir which is filled with the beverage substance is. The reservoir is preferably filled with a pre-portioned quantity of beverage substance which is necessary for producing a drinking portion, for example a drinking glass filling of the desired beverage. Such a drinking glass filling typically comprises 0.1 liter, 0.2 liter, 0.3 liter, 0.33 liter, 0.35 liter, 0.366 liter, 0.5 liter or 1 liter of liquid. Advantageously, the user can easily create different beverages by selecting a particular cartridge containing the corresponding beverage substance to produce the desired beverage into the cartridge cartridge. picking up and starting the beverage production process at the beverage preparation unit. The beverage is then automatically generated, passed into a drinking vessel and thus provided to the user. Then the used cartridge is removed and disposed of. Since recontamination of the beverage preparation unit is avoided in the sense according to the invention, it advantageously does not require a rinsing or cleaning process before a new beverage with a different flavor is produced.

The beverage substance preferably comprises a liquid beverage substance, such as refreshing drinks (also referred to as soft drinks), sweet drinks, fruit juices, fruit nectars, fruit juice concentrates, fruit spritzers, sodas, effervescent drinks, energy drinks, isotonic drinks, beer, mixed beer drinks, table water, effervescent, mineral water, spirits , Alco- pops, fruit wine, vegetable juices, vegetable nectars, sparkling wine, fruit sparkling wine, mixed alcoholic drinks, wine, wine spritzers, cocktails, coffee, tea, iced tea, milk, cocoa drinks, caffeinated, alcoholic, (fruit) sugary and / or carbonated drinks and their mixtures and modifications. It is also conceivable that the beverage substance in particular comprises only liquid pre-mix components for the aforementioned drinks, so that by mixing the pre-mix components with water in the mixing chamber, the drinks mentioned first arise. It is also conceivable that the beverage substance additionally or exclusively contains particulate substances, such as soluble powders, for example effervescent powder or the like.

According to a particularly preferred embodiment of the present invention, it is provided that the cartridge has a piston arranged in the reservoir, which can be transferred between a starting position near an inlet side of the cartridge and an end position, which is displaced from the inlet side towards an outlet side. In this way, the beverage substance is conveyed from the reservoir into the mixing chamber. The mixing chamber is preferably part of the cartridge and in particular arranged below the reservoir when the cartridge is inserted into the cartridge receptacle.

Preferably, the piston has a sealing device, in particular in the form of a flexible circumferential sealing lip, which seals a gap between a wall of the reservoir and the piston.

Preferably, the piston has a plunger receptacle for receiving a plunger of the beverage preparation unit, wherein the plunger is designed, by inserting the plunger In the reservoir, the beverage substance is transferred from the starting position into the end position, so that the beverage substance is conducted out of the reservoir into a mixing chamber arranged downstream of the reservoir and in particular below the reservoir. The plunger seat can be, for example, a funnel-shaped receptacle, a recess, a bulge or the like, which centers the plunger on the piston and secures against lateral slippage.

According to a preferred embodiment of the present invention, it is provided that the cartridge in the region of the insertion side has a sealing element which is opened by the insertion of the piston, wherein in particular the sealing element comprises a sealing film which enters during insertion of the piston. Preferably, a further sealing element is arranged between the reservoir and the mixing chamber, which is opened upon insertion of the cartridge into the cartridge receptacle or upon activation of the cartridge unloading device. Also, the further sealing element preferably comprises a sealing foil, which is opened by a pressure increase in the reservoir during the transfer of the piston from the starting position to the end position and in particular tears. The sealing element and the further sealing element serve, as already described in detail above, for the aroma-tight closure of the reservoir during transport or during storage thereof.

Preferably, the cartridge has a mixing chamber which can be fluidly connected to a fluid supply of the beverage preparation unit. Preferably, the mixing chamber here comprises a quick coupling for connecting the mixing chamber to the fluid supply, when the cartridge is inserted into the cartridge receptacle.

The mixing chamber preferably has a beverage outlet, through which the beverage formed from mixing the beverage substance with the fluid is dispensed, the system preferably being designed such that the beverage from the beverage outlet can be introduced directly into a portable vessel. Advantageously, neither the beverage substance nor the beverage produced from the beverage substance in the mixing chamber thus comes into direct contact with a part of the beverage preparation unit, so that back-contamination can be effectively avoided.

According to a preferred embodiment of the present invention, it is provided that the cartridge has at least one connecting element which, when the cartridge is inserted into the beverage preparation unit, cooperates with the cartridge receptacle in order to hold the cartridge in the cartridge receptacle. It is conceivable that the connection comprises an insertion element, which engages in a positive locking element, in particular in the form of a spring and / or latching element of the cartridge receptacle.

According to a preferred embodiment of the present invention, it is provided that the cartridge has an upper connecting element in the region of the input side and a lower connecting element in the region of the outlet side and / or the mixing chamber. Preferably, in an intermediate region between the inlet side and the outlet side, the cartridge has an enlarged or reduced diameter in relation to the diameter of the cartridge in the region of the inlet side and / or the outlet side. In this way, cartridges with reservoirs of different volumes can be inserted into the cartridge receptacle. It is conceivable that the diameter of the cartridge in the region of the inlet side is substantially identical to the diameter of the cartridge in the region of the mixing chamber and / or the outlet side. Alternatively, the diameter on the input side but also be different from the diameter on the output side, so that a rotation protection is realized and a correct insertion of the cartridge is ensured in the cartridge receptacle.

The cartridge is preferably rotationally symmetrical along its longitudinal axis to facilitate insertion of the cartridge into the cartridge receptacle for the user.

According to a preferred embodiment of the present invention, provision is made for a shielding element to be arranged inside the cartridge, wherein the shielding element preferably comprises a bellows or a flexible bag element which is arranged inside the reservoir, wherein the beverage substance inside the bellows or the pliable bag element is arranged. The bellows or the bag element consist in particular of a liquid-impermeable and / or gas-impermeable film. Furthermore, the bellows or the bag element are preferably fastened to the cartridge in the area of the outlet side of the cartridge.

Another object of the present invention is a beverage preparation unit for the particular inventive system for producing a beverage, the beverage preparation unit, the cartridge receiving, in which the cartridge according to the invention is reversibly applicable, a cartridge unloading, which at least partially transfer the beverage substance from the reservoir in causes a mixing chamber, and has the fluid supply, which opens into the mixing chamber. According to a preferred embodiment of the present invention, it is provided that the cartridge discharge device comprises a movable plunger, which is insertable into the cartridge on an input side of the cartridge in order to force the beverage substance on an exit side of the cartridge out of the cartridge. Preferably, the beverage preparation unit has a guide unit for the motor-driven supply of the plunger into the cartridge, wherein the guide unit comprises the plunger a straight or curved guide element for insertion of the plunger and wherein the guide unit has an electric or hydraulic linear motor and in particular a spindle drive.

According to a preferred embodiment of the present invention, it is provided that the beverage preparation unit has the mixing chamber, wherein the mixing chamber is removable from the remaining beverage preparation unit. In this embodiment, the mixing chamber is not part of the cartridge, but used separately from the cartridge in the beverage preparation unit and (for cleaning and service purposes) removable. Advantageously, the mixing chamber can thus be used several times. It is conceivable that the beverage preparation unit with an automatic rinsing and cleaning mechanism for cleaning the mixing chamber after each beverage manufacturing process or after a certain number of beverage production processes.

It is conceivable that the beverage preparation unit has a cooling unit for cooling a fluid which is supplied to the fluid supply.

Another object of the present invention is a process for the preparation of a beverage, in particular with the system according to the invention, comprising the following steps:

Inserting a cartridge filled with a beverage substance into a cartridge receptacle of a beverage preparation unit,

 Transferring the beverage substance from a reservoir of the cartridge into a mixing chamber by means of a cartridge unloading device,

 Feeding a fluid into the mixing chamber by means of a fluid supply,

 Discharging the beverage produced in the mixing chamber by mixing the beverage substance with the fluid by means of a beverage outlet.

Like the system according to the invention described above, the method according to the invention has the advantage over the prior art that a return contamination of the beverage preparation unit is largely avoided, since the supplied fluid for mixing with the beverage substance is not passed into the reservoir, but in the mixing chamber. Since the fluid is not used to transfer the beverage substance, the beverage substance is preferably forced into the mixing chamber by a piston from the reservoir by moving the piston from an initial position to an end position by means of the cartridge unloading device. It is conceivable that the piston is moved by means of a cartridge unloading device in the form of a plunger acting on the piston or by compressed air. Preferably, the plunger is motor-driven introduced into the cartridge by means of a guide unit and acts on the piston to move the piston from the starting position to the end position.

Alternatively, it would also be conceivable that the beverage substance is transferred by compressed air or negative pressure from the reservoir into the mixing chamber. According to a preferred embodiment of the present invention, it is provided that the fluid is cooled and / or carbonized before it is fed into the mixing chamber.

According to a further preferred embodiment of the present invention, it is provided that upon insertion of the plunger into the cartridge a sealing element sealing the cartridge is opened, wherein the sealing element preferably comprises a sealing foil which is torn by the plunger. It is conceivable that by transferring the beverage substance in the direction of the mixing chamber, a further sealing element which is opened between the reservoir and the mixing chamber, wherein the further sealing element preferably comprises a sealing film which is torn by the pressure increase in the reservoir.

According to a further preferred embodiment of the present invention, it is provided that the cartridge discharge device acts on a shielding element arranged inside the cartridge in order to transfer the beverage substance from the reservoir into the mixing chamber, during which the shielding element is folded or compressed.

Further details, features and advantages of the invention will become apparent from the drawings, as well as from the following description of preferred embodiments with reference to the drawings. The drawings illustrate only exemplary embodiments of the invention, which do not limit the essential idea of the invention. Brief Description of the Drawings Fig. 1 is a schematic cross-sectional view of a system, a cartridge, a beverage preparation unit, and a method of making a beverage according to an exemplary embodiment of the present invention. shows a detail view of the cartridge according to the first exemplary embodiment of the present invention. shows a detailed view of the beverage preparation unit according to the first exemplary embodiment of the present invention. shows a schematic view in which the illustrated in Figure 2a cartridge is inserted into the illustrated in Figure 2b beverage preparation unit. shows the system and method for making a beverage according to an exemplary second embodiment of the present invention. shows the system and the method for producing a beverage according to the first embodiment of the present invention. shows a system and a method for making a beverage according to an exemplary third embodiment of the present invention.

Figures 6a, 6b show a system and method for making a beverage according to an exemplary fourth embodiment of the present invention.

Figures 7a, 7b show a system and method for making a beverage according to an exemplary fifth embodiment of the present invention. Embodiments of the invention

In the various figures, the same parts are always provided with the same reference numerals and are therefore usually named or mentioned only once in each case.

1 shows a schematic sectional view of a system 1 according to the invention with a cartridge 2 according to the invention and a beverage preparation unit 3 according to the invention for the production of a beverage by means of a method according to the invention in accordance with an exemplary first embodiment of the present invention.

The present system 1 comprises the beverage preparation unit 3, in which replaceable cartridges 2 can be inserted, which are filled with a specific beverage substance 7. Within the beverage preparation unit 3, a corresponding beverage is produced with the aid of the beverage substance 7 and optionally an additional water source. The cartridge 2 is preferably filled with a pre-portioned quantity of beverage substance 7, which is necessary for producing a specific drinking portion, for example a drinking glass filling of the desired beverage. In particular, a plurality of different cartridges 2 are available, which are filled with different beverage substances 7 to produce different drinks. If the user of the system 1 wishes to drink a particular drink, he only needs to select from the plurality of different cartridges 2 the cartridge 2 which contains the corresponding beverage substance 7 for producing the desired beverage, insert it into a cartridge receptacle 10 of the beverage preparation unit 3 and optionally start the beverage production process at the beverage preparation unit 3, for example by pressing a start button, corresponding touching of a touch-sensitive display, by gesture or voice control or by means of a suitable application on a mobile telephone. It is also conceivable that the beverage production process controls automatically when the insertion of a new cartridge 2 is detected in the cartridge holder 10. In each of the aforementioned cases, the desired beverage is then automatically generated, passed into a drinking vessel and thus provided to the user. Subsequently, the spent cartridge 2 is removed and disposed of. The beverage preparation unit 3 is now ready to be filled with any new cartridge 2 to produce another drink.

The beverage substance 7 preferably comprises liquid pre-mix components for refreshment drinks, such as caffeine, carbon dioxide, fruit and / or sugar-containing sodas and juices, beer (mixed) drinks or other alcoholic or non-alcoholic mixed drinks. The cartridge 2 comprises a cylindrical container having an input side 4 (arranged at the top in the drawing) and an output side 5 (arranged at the bottom in the drawing). Within the container, the cartridge 2 has a reservoir 6, which is filled with the liquid beverage substance 7. In the area of the outlet side 5, the cartridge 2 has a mixing chamber 8 (ie the mixing chamber is here part of the cartridge 2), which is firmly connected to the container. The reservoir 6 opens in this area into a transfer opening 9 through which the beverage substance can pass from the reservoir 6 into the mixing chamber 8. The bottom of the reservoir 6 is funnel-shaped in the present example, wherein the transfer opening 9 is arranged in the center of the funnel-shaped bottom. The transfer opening 9 then leads into an optional short pipe section which projects into the mixing chamber 8.

The mixing chamber 8 has a beverage outlet 1 1, through which the beverage produced within the mixing chamber 8 leaves the mixing chamber and in particular directly into the drinking vessel (not shown) is passed, i. without parts of the beverage preparation unit 3 coming into contact with the beverage. In this way, recontamination of the beverage preparation unit 3 is prevented. The drinking vessel is arranged in particular directly below the beverage outlet 1 1.

The mixing chamber 8 has a quick coupling 26, with which the mixing chamber 8 can be connected to a fluid supply 12 of the beverage preparation unit 3. The quick coupling 26 is designed such that upon insertion of the cartridge 2 in the card holder 10, a fluid connection between the mixing chamber 8 and the fluid supply 12 is produced. During the beverage production process fluid, in particular cooled and carbonated drinking water, passes from the fluid supply into the mixing chamber 8 via this fluid connection. Furthermore, beverage substance 7 passes from the reservoir 6 through the transfer opening 9 into the mixing chamber 8 during mixing of the beverage production process Fluid in the mixing chamber 8 forms the beverage, which then leaves the mixing chamber 8 through the beverage outlet 1 1. The fluid supply 12 comprises a water line, which acts as a bypass to the cartridge 2. The fluid therefore does not have to be pumped through the reservoir 6, but only meets the beverage substance 7 in the mixing chamber 8. For transferring the beverage substance 7 from the reservoir 6 into the mixing chamber 8, the cartridge 2 has a piston 13 which is located in the reservoir 6 is movably arranged. In the present example, the piston 13 comprises a disc-shaped element whose passage knife substantially corresponds to the diameter of the reservoir 6. The remaining gap between the reservoir wall and the piston 13 is preferably sealed by a sealing device 15 in the form of a flexible circumferential sealing lip or a circumferential flexible sealing bead.

The beverage preparation unit 3 has a cartridge unloading device 34 for actuating the piston 13. The cartridge unloader 34 includes a plunger 16 (see FIG. 5) configured to transfer the plunger 13 from an initial position to an end position to force the beverage substance 7 into the mixing chamber 7. In the delivery state of the cartridge 2, the piston 13 is arranged in the starting position near the input side 4. The piston 13 has on its side facing away from the beverage substance 7 a plunger receptacle 14 for receiving the plunger 16 (not shown in Figure 1). After the beverage production process has been started, the plunger 16 is moved in the direction of the input side 4 in the cartridge 2 and enters the plunger receptacle 14. The plunger 16 is then further retracted into the cartridge 2, whereby the piston 2 from the input side 4 in the direction of Output side 5 is moved until it assumes an end position near the output side 5. By moving the piston 13 through the reservoir 6, the beverage substance 7 is forced out of the reservoir 6 into the mixing chamber 8 to mix with the fluid in the mixing chamber 8 for making the beverage. After the beverage production process is completed, the plunger 16 is moved out of the cartridge 2 again, so that the empty or spent cartridge 2 can be removed from the beverage preparation unit 3 again. Thus, the plunger 16 can be retracted on the input side 4 in the cartridge 2, the container on the input side 4 has a plunger opening 17. It is conceivable that the plunger opening 17 is limited to the cross section of the plunger 16 or corresponds to the entire cross section of the piston 13 and the reservoir 6.

So that the beverage substance 7 does not escape from the cartridge 2 during storage and transport of the cartridge 2 or the aroma is retained, the cartridge 2 is closed in the initial state of air, liquid and aroma-tight. For this purpose, the cartridge 2 has a sealing element 18 in the form of a thin sealing film on its input side 4, and a further sealing element 19 in the form of a thin sealing film in the region of the outlet side 5, in particular within the transfer opening 9. The two sealing films are formed such that they tear easily under pressure. When inserting the cartridge 2 into the cartridge receptacle 10, both sealing films are still intact. As soon as the plunger 16 moves into the cartridge 2 and thereby comes into contact with the sealing film on the input side 4, the sealing film ruptures, so that the plunger 16 reaches the piston 13. When connecting the depression of the piston 13, the pressure in the interior of the reservoir 6 increases until the sealing film in the transfer opening 9 tears, so that the beverage substance 7 enters the mixing chamber 8. Optionally, it would also be conceivable for a piercing element projecting in the direction of the sealing film within the transfer opening 9 to be arranged within the mixing chamber 8, which comes into contact with the sealing film when the sealing film expands under the pressure building up in the reservoir 6 in the direction of the mixing chamber 8, so that a tearing of the sealing film takes place by the contact of the stretched sealing film with the piercing element or at least favors.

The cartridge receptacle 10 has an upper positive locking element 20 in the region of the input side 4 and a lower positive locking element 21 in the region of the starting side 5. The upper and the lower form-locking element 20, 21 are formed such that the cartridge 2 can be arranged in the cartridge receptacle 10 by a vertical movement between the two form-fitting element 20, 21 and in this position by the two form-locking elements 20, 21 or. between the two form-fitting elements 20, 21 is held positively. The lower form-fitting element 21 has for this purpose a cup-shaped receptacle, which is adapted to the outer shape of the underside of the cartridge. The upper form-locking element 20 has two lateral locking elements 22 which are spring-loaded in the direction of the cartridge 2 and engage positively and non-positively upon insertion of the cartridge 2 into two corresponding lateral receptacles 24 of the cartridge 2, which act as counter-locking elements 23. The cartridge 2 is thus fixed within the cartridge receptacle 10 during the beverage manufacturing process.

FIG. 2a illustrates a detail view of the cartridge 2 according to the first exemplary embodiment of the present invention. In this perspective, on the upper side of the cartridge 2, the piston 13 can be seen, which occupies the entire cross section of the reservoir 6. At its edge, the piston 6 is sealed with the peripheral sealing device 15 in the form of a flexible circumferential sealing lip or a circumferential flexible sealing bead against the Reservoirwandung. The piston 3 has the plunger seat 14 centrally.

The sealing element, which extends over the piston and the reservoir seals upwards or to the input side 4 aroma-tight, is formed as a thin, transparent sealing film, which is easily pierceable by the plunger, and therefore can not be clearly seen in Figure 2a. At the upper edge of the Reservoirwandung a laterally projecting flange 25 can be seen, in which the two lateral receptacles 24 are formed in the form of recesses. In these recesses snaps when inserting the cartridge 2 in the cartridge holder 10, the counter-locking elements 23 a.

At the lower end of the reservoir 6, the cartridge 2, the mixing chamber 8. It can be seen that in the present example, the quick coupling 26 consists of a pipe receiving, in which or via which the associated pipe end of the fluid supply 12 is arranged to the mixing chamber 8 to couple with the Fluizuführung.

FIG. 2b illustrates a detailed view of details of the beverage preparation unit 3 according to the first exemplary embodiment of the present invention. In this perspective, one sees on the one hand the fluid supply 12, which is designed in the form of a tube bypassing the cartridge 2 for supplying the fluid, and the cartridge receptacle 10 in the form of the upper and lower form-fitting elements 20, 21. The lower form-fit element 21 is an outer contour the bottom of the mixing chamber 8 adapted and has both a recess for the beverage outlet 1 1 and for the quick coupling 26 on.

FIG. 2c shows a schematic view in which the cartridge 2 illustrated in FIG. 2a is inserted into the beverage preparation unit 3 illustrated in FIG. 2b. The beverage preparation unit 3 is either a separate stand-alone machine, a so-called stand-alone device, or part of a refrigerator (not shown). It is conceivable, for example, that the beverage preparation unit 3 is installed in the front of such a refrigerator. The fluid supply 12 is preferably supplied with fluid, which is previously cooled by a refrigeration unit (not shown). The refrigeration unit is in turn either part of the beverage preparation unit 3 (in the case of the stand-alone device) or part of the stand with the beverage preparation unit 3 in operative connection refrigerator. In the case of the stand-alone device, the cooling unit may be a compressor cooling unit, an absorber cooling unit or a thermoelectric cooler. Optionally, fluid supply 12 is further supplied with fluid previously carbonated by a carbonator (not shown). In this way, carbonated soft drinks can be produced. The carbonator is preferred part of the beverage preparation unit 3, wherein the carbonator in particular has a receptacle for a replaceable C0 ₂ cartridge and optionally a supply device for displacing the fluid with C0 ₂ from the C0 ₂ cartridge. FIG. 3 shows the system 1 and the method for producing a beverage according to an exemplary second embodiment. The situation is shown in a snapshot, in which the piston 13 is transferred by means of the cartridge discharge device 34 from its starting position near the inlet side 4 in its end position near the outlet side 5 in order to feed the beverage substance 7 from the reservoir 6 into the mixing chamber 8 convict. In this example, to move the piston 13 above the piston 13, excess pressure is generated in the cartridge 2 or in the reservoir 6, whereby the piston 13 moves in the direction of the mixing chamber. The increasing pressure underneath the piston 13 causes (as described above) the further sealing element 19 tears and thus the transfer opening 9 is released. When the piston 13 has reached the lower end position, the compressed air supply is interrupted again, so that the cartridge 2 can be removed again after the end of the beverage production process.

To provide the overpressure, the cartridge discharge device 34 is equipped here with a replaceable compressed air cartridge or with a compressor. In the event that the beverage preparation unit 3 in any case has a carbonator (see above) which comprises a C0 ₂ cartridge, this C0 ₂ cartridge is preferably also used at the same time as a compressed air source for the cartridge unloading device. FIG. 4 shows the system 1 and the method for producing a beverage according to the first embodiment outlined in FIG.

In this first embodiment, the piston 13 is not transferred from the starting position to the end position as in the second embodiment with overpressure but with the plunger 16. The plunger 16, which is inserted into the cartridge 2 from above by means of the cartridge discharge device 34, penetrates the sealing element 18 and enters the plunger receptacle 14. The plunger 16 is then moved in the direction of the mixing chamber 8 by further retraction of the plunger 16. As a result, the further sealing element 19 travels and the beverage substance 7 passes into the mixing chamber 8. After the beverage production process has been completed, the plunger 16 is again moved out of the cartridge 2 so that the user can remove the cartridge 2 from the beverage preparation unit 3. The plunger 16 is either rigid and is introduced vertically or obliquely straight from above. Alternatively, the plunger 16 is semi-rigid or flexible and is introduced via a curved line from above into the cartridge 2, so that the overall height of the beverage preparation unit 3 can be reduced. It is conceivable that the plunger 16 is introduced automatically, for example by means of a motor, or by the user of a manually operated handle or lever of the cartridge unloading device 34.

FIG. 5 shows a system 1 and a method for producing a beverage according to an exemplary third embodiment of the present invention. The third embodiment of the present invention is substantially similar to the first embodiment described with reference to FIGS. 1, 2a, 2b, 2c and 4.

In the beverage preparation unit 3 according to the third embodiment, the cartridge unloading device 34 has an electric drive 27. The electric drive 27 comprises in particular an electric motor 28 (for example a three-phase asynchronous machine or a three-phase synchronous machine) which drives a drive axle 29. On the drive shaft 29 is seated a primary pinion 30. The primary pinion 31 meshes with a secondary pinion 32. The secondary pinion 32 has an internal ring gear, which is in engagement with a threaded spindle 33. The secondary pinion 32 is held in a guide unit 25 which guides the threaded spindle 33 rotatably and longitudinally displaceably (in the vertical direction). By rotating the drive shaft 29 by means of the electric motor 28, the secondary pinion 31 is rotated and, depending on the direction of rotation, the threaded spindle 33 down, ie into the cartridge 2 into or up, so from the cartridge. 2 out, moving. In this way, the piston 13 can be moved from the starting position to the end position.

Alternatively, the drive comprises a linear electric motor with a pinion which sits on a drive shaft of an electric motor and engages in a rack, wherein the rack is coupled to the plunger 16 or is already part of the plunger 16. By turning the pinion, the rack is moved and thus the plunger moved into the cartridge or moved out of the cartridge.

In FIG. 5, the upper form-locking elements 20 engaging laterally on the cartridge 2 are also clearly visible. The upper interlocking elements each comprise a latching element 22, which in each case by means of a compression spring 34 positively and non-positively engage in the corresponding recess 24 on the cartridge 2 to reversibly fix the cartridge 2 in the cartridge receptacle 10 at least during the beverage production process. FIGS. 6 a and 6 b show a system 1 and a method for producing a beverage according to an exemplary fourth embodiment of the present invention. The fourth embodiment is substantially similar to the second and third embodiments illustrated in FIGS. 3 and 4, wherein inside the cartridge 2 a shielding element 40 in the form of a bellows 41 is arranged. The bellows 41 is attached to the output side 4 of the cartridge 2. The beverage substance 7 is arranged inside the bellows 41 so that the shielding element 40 is always between the cartridge unloading device 34 and the beverage substance 7 and the cartridge unloading device 34 is insulated from the beverage substance 7 by means of the shielding element 40. In this way, back contamination of the beverage preparation machine 3 via the cartridge unloading device 34 is prevented. So that an emptying of the reservoir 6 is still possible, the shielding element 40 is flexible and designed as a bellows 41. When emptying the reservoir 6 during the beverage production process, the shielding element 40 is moved by means of the cartridge unloading device 34 either by a plunger 16 or by compressed air in the direction of the outlet side 5, so that the beverage substance 7 is transferred from the reservoir 7 in the direction of the mixing chamber 8. The bellows 41 folds together. The bellows 41 is in particular made of a liquid-impermeable film material.

FIGS. 7 a and 7 b show a system 1 and a method for producing a beverage according to an exemplary fifth embodiment of the present invention. The fifth embodiment is substantially similar to the fourth embodiment illustrated in FIGS. 6a and 6b, wherein inside the cartridge 2 a shielding element 40 is arranged not in the form of a bellows 41 but in the form of a pliable bag element 42. In contrast to the bellows 41, the bag element 42 does not fold properly, but is simply compressed by the cartridge unloader 34. The bag element 42 is in particular made of a liquid-impermeable film material. As with the bellows 41, the bag element 42 is attached to the output side 4 of the cartridge 2, while inside the bag element 42 the beverage substance 7 is arranged. LIST OF REFERENCE NUMBERS

1 system

 2 cartridge

 3 beverage preparation unit

4 input side

 5 output side

 6 reservoir

 7 beverage substance

 8 mixing chamber

 9 transfer opening

 10 cartridge intake

1 1 beverage outlet

 12 fluid supply

 13 pistons

 14 plunger holder

 15 sealing device

 16 pestles

 17 ram opening

 18 sealing element

 19 Another sealing element

20 Upper positive locking element

21 lower positive locking element

22 locking element

 23 counter-latching element

 24 recording

 25 flange

 26 quick coupling

 27 Electric drive

 28 electric motor

 29 drive axle

 30 primary pinions

 31 secondary pinion

 32 threaded spindle

 33 compression spring

 34 cartridge unloading device

35 leadership unit shielding

bellow

bag member

Claims

1 . System (1) for producing a drink, in particular a cold drink, comprising a cartridge (2) containing a reservoir filled with a beverage substance (7) (6), and a beverage preparation unit (3) with a cartridge receptacle (10) into which the cartridge (2) is reversibly insertable, and a cartridge unloading device (34) which at least partially transferring the beverage substance (7) from the reservoir (6) into a mixing chamber (8), characterized in that the beverage preparation unit (3) further comprises a fluid supply (12), which opens into the mixing chamber (8). 2. System (1) according to claim 1 or according to the preamble of claim 1, characterized in that the system (1) has a movable piston (13) which is arranged within the reservoir (6) and by means of the cartridge unloading device ( 34) can be transferred from an initial position to an end position. 3. System (1) according to claim 2, wherein the piston (13) in the starting position near the input side (4) is arranged and wherein the piston (13) is displaced in the end position in the direction of the output side (5). 4. System (1) according to any one of claims 2 or 3, wherein the piston (13) as part of the cartridge (2) permanently in the reservoir (6) is arranged or as part of the cartridge unloading device (34) in the reservoir (6 ) is insertable after the cartridge (2) has been inserted into the beverage preparation unit (3). 5. System (1) according to one of claims 2 to 4, wherein the piston (13) has a sealing device (15), in particular in the form of a flexible circumferential sealing lip or sealing bead, which has a gap between a wall of the reservoir (6) and the piston (13) seals. 6. System (1) according to any one of the preceding claims, wherein the cartridge unloading device (34) comprises a movable plunger (16) which is insertable on an input side (4) of the cartridge (2) in the cartridge (2) the beverage substance (7) on an output side (5) of the cartridge (2) from the cartridge (2) to press. 7. System (1) according to claim 6, wherein the cartridge-side end of the plunger (16) has the piston (13) or wherein the cartridge-side end of the plunger (16) for Cooperation with the in the cartridge (2) arranged piston (13) is provided such that upon insertion of the plunger (16) into the cartridge (2) of the plunger (16) on the piston located in the initial position (13) and then from the plunger (16) is moved to the end position. 8. System (1) according to claim 7, wherein the cartridge (2) in the region of the insertion side has a sealing element (18, 19) which is opened by the insertion of the piston (13), wherein in particular the sealing element (18, 19) a sealing foil, which enters upon insertion of the piston (13). 9. System (1) according to claim 8, wherein the sealing film between the piston arranged in the starting position (13) and the beverage substance (7) is arranged so that the sealing film during insertion of the plunger (16) of the piston (13) torn or, wherein the piston (13) in the initial position between the sealing element (18, 19) and the beverage substance (7) is arranged, so that the sealing film during insertion of the plunger (16) from the plunger (16) is torn. 10. System (1) according to one of claims 6 to 9, wherein the beverage preparation unit (3) has a guide unit for motor-driven supply of the plunger (16) in the cartridge (2), wherein the guide unit (35) the plunger (16) a straight or curved guide element (35) for insertion of the plunger (16) and wherein the guide unit (35) comprises an electric or hydraulic linear motor and in particular a spindle drive. 1 1. System (1) according to one of claims 6 to 10, wherein the plunger (16) is rigid, semi-rigid or flexible. 12. System (1) according to one of the preceding claims 1 to 5, wherein the cartridge unloading device (34) comprises a compressed air source for injecting compressed air into the reservoir (6) on an input side (4) of the cartridge (2) System (1) is in particular designed such that is pressed by the compressed air, the beverage substance (7) directly from the reservoir (6) or that is transferred by the compressed air, the piston (13) from the starting position to the end position. 13. System (1) according to one of the preceding claims 1 to 5, wherein the cartridge unloading device (34) comprises a vacuum device for sucking the beverage substance (7) from the reservoir (6) by means of negative pressure, wherein the System (1) is in particular designed such that is sucked by the negative pressure, the beverage substance (7) directly from the reservoir (6) or that is transferred by the negative pressure of the piston (13) from the starting position to the end position. 14. System (1) according to any one of the preceding claims, wherein the mixing chamber (8) has a beverage outlet (1 1) through which the beverage formed from a mixing of the beverage substance (7) with the fluid is discharged, the system (1 ) is preferably designed such that the beverage from the beverage outlet (1 1) can be introduced directly into a portable vessel. 15. System (1) according to one of the preceding claims, wherein the fluid supply (12) is supplied with fluid, which is cooled by a cooling unit, wherein the cooling unit part of the beverage preparation unit (3) or one with the beverage preparation unit (3) operatively connected separate refrigerator is. 16. System (1) according to claim 15, wherein the cooling unit comprises a compressor cooling unit, an absorber cooling unit or a thermoelectric cooler. 17. System (1) according to one of the preceding claims, wherein the fluid supply (12) is fed with fluid which is carbonated by a carbonator. The system (1) of claim 17, wherein the carbonator is part of the beverage preparation unit (3) and wherein the carbonator has a receptacle for a C0 ₂ cartridge and a supply means for displacing the fluid with C0 ₂ from the C0 ₂ cartridge. 19. System (1) according to one of the preceding claims, wherein the mixing chamber (8) is formed as part of the replaceable cartridge (2). 20. System (1) according to claim 19, wherein between the reservoir (6) and the mixing chamber (8), a further sealing element (18, 19) is arranged, which upon insertion of the cartridge (2) in the cartridge receptacle (10) or at Activating the cartridge unloading device (34) is opened. 21. System (1) according to claim 20, wherein the further sealing element (18, 19) comprises a sealing film which is opened by a pressure increase in the reservoir (6) during transfer of the piston (13) from the starting position to the end position and in particular tears. 22. System (1) according to any one of claims 19 to 21, wherein the mixing chamber (8) has a quick coupling (26) for connecting the mixing chamber (8) with the fluid supply (12) when the cartridge (2) in the cartridge receptacle (10 ) is used. 23. System (1) according to claim 22, wherein the quick coupling (26) has a coupling stub and a coupling socket receiving in the coupled state receiving coupling, wherein the coupling stub and / or the coupling receptacle comprises a seal and / or wherein in the coupled state of the coupling stub in the coupling receptacle engages latching and / or wherein the coupling connection part of the beverage preparation unit (3) and the coupling receptacle part of the mixing chamber (8). 24. System (1) according to one of the preceding claims, wherein the cartridge receptacle (10) has a form-locking element (20, 21) which receives the cartridge (2) in a form-fitting manner, wherein the cartridge (2) preferably additionally frictionally in the cartridge receptacle (10 ) is held. 25. System (1) according to claim 24, wherein the positive-locking element (20, 21) comprises at least one spring and / or latching element (22) which is compressed by inserting the cartridge (2) into the cartridge receptacle (10) and / or engages, wherein the cartridge receptacle (10) preferably has an insertion bevel and / or positioning aid. 26. System (1) according to one of the preceding claims, wherein the cartridge receptacle (10) has an upper form-locking element (20, 21), which holds the cartridge (2) in the region of its input side (4), and a lower form-locking element (20, 21 ), which holds the cartridge (2) in the region of the outlet side (5) and / or the mixing chamber (8). 27. System (1) according to claim 26, wherein the cartridge receptacle (10) is designed such that the cartridge (2) between the upper form-fitting element (20, 21) and the lower form-locking element (20, 21) has a diameter which is greater or smaller than the diameter in the region of the upper and lower positive-locking element (20, 21). 28. System (1) according to claim 1 or according to the preamble of claim 1, characterized in that within the cartridge (2) a shielding element (40) is arranged, on which the cartridge unloading device (34) acts to the beverage substance (7). from the reservoir (6) into the mixing chamber (8), the shielding element (40) being arranged between the cartridge unloading device (34) and the beverage substance (7). A system (1) according to claim 28, wherein the shielding member (40) is a bellows (41) or a flexible bag member (42) disposed within the reservoir (6), inside the bellows (41) or the pliable bag It is preferably provided that the bellows (41) or the pliable bag element (42) in the initial state from the output side (5) at least partially parallel to the cartridge wall to the input side (4 ) and is moved by the cartridge unloading device (34) in the direction of the output side (5). Cartridge (2) for a system (1) for producing a beverage, in particular according to one of the preceding claims, wherein the cartridge (2) can be inserted into a cartridge receptacle (10) of a beverage preparation unit (3) and wherein the cartridge (2) a reservoir (6) which is filled with a beverage substance (7). 31. A cartridge (2) according to claim 30, wherein the cartridge (2) has a piston (13) disposed in the reservoir (6) which is movable between an initial position near an inlet side (4) of the cartridge (2) and an end position remote from the inlet - Side (4) in the direction of an output side (5) is displaced, is convertible. 32. Cartridge (2) according to claim 31, wherein the piston (13) has a sealing device (15), in particular in the form of a flexible circumferential sealing lip, which seals a gap between a wall of the reservoir (6) and the piston (13) , 33. A cartridge (2) according to any one of claims 31 or 32, wherein the piston (13) has a plunger receptacle (14) for receiving a plunger (16) of the beverage preparation unit (3) and wherein the piston (13) is adapted to Introduce of the plunger (16) into the reservoir (6) from the starting position to the end position, so that the beverage substance (7) from the reservoir (6) in a fluid behind the reservoir (6) and in particular below the reservoir ( 6) arranged mixing chamber (8) is passed. 34. A cartridge (2) according to any one of claims 30 to 33, wherein the cartridge (2) in the region of the insertion side, a sealing element (18, 19) which is opened by the insertion of the piston (13), wherein in particular the sealing element ( 18, 19) comprises a sealing foil, which enters upon insertion of the piston (13). 35. Cartridge (2) according to one of claims 30 to 34, wherein the cartridge (2) has a mixing chamber (8) which can be brought into fluid communication with a fluid supply (12) of the beverage preparation unit (3). A cartridge (2) according to claim 35, wherein the mixing chamber (8) has a beverage outlet through which the beverage formed from a mixing of the beverage substance (7) with the fluid is dispensed, the system (1) being preferably designed such that the beverage from the beverage outlet can be introduced directly into a portable vessel. 37. A cartridge (2) according to any one of claims 35 or 36, wherein the mixing chamber (8) has a quick coupling (26) for connecting the mixing chamber (8) with the fluid supply (12). 38. A cartridge (2) according to any one of claims 33 to 37, wherein between the reservoir (6) and the mixing chamber (8), a further sealing element (18, 19) is arranged, which upon insertion of the cartridge (2) in the cartridge receptacle ( 10) or when activating the cartridge unloader (34) is opened. 39. Cartridge (2) according to claim 38, wherein the further sealing element (18, 19) comprises a sealing film which is opened by a pressure increase in the reservoir (6) during transfer of the piston (13) from the starting position to the end position and in particular tears , 40. A cartridge (2) according to any one of claims 30 to 39, wherein the cartridge (2) has at least one connecting element, which upon insertion of the cartridge (2) in the beverage preparation unit (3) cooperates with the cartridge receptacle (10) to hold the cartridge (2) in the cartridge receptacle (10). 41. Cartridge (2) according to claim 40, wherein the connecting element comprises an insertion element which engages in a form-locking element (20, 21), in particular in the form of a spring and / or latching element (22). 42. A cartridge (2) according to any one of claims 40 or 41, wherein the cartridge (2) has an upper connecting element in the region of the input side (4) and a lower connecting element in the region of the output side (5) and / or the mixing chamber (8) , 43. Cartridge (2) according to claim 42, wherein the cartridge (2) in an intermediate region between the input side (4) and the output side (5) with respect to the diameter of the cartridge (2) in the region of the input side (4) and / or the output side (5) has increased or reduced diameter. 44. Cartridge (2) according to claim 43, wherein the diameter of the cartridge (2) in the region of the inlet side (4) substantially identical to the diameter of the cartridge (2) in the region of the mixing chamber (8) and / or the outlet side (5 ). 45. A cartridge (2) according to any one of claims 30 to 44, wherein within the cartridge, a shielding member (40) is arranged, wherein the shielding member (40) preferably comprises a bellows (41) or a flexible bag member (42) which within the Reservoirs (6) is arranged, wherein within the bellows (41) or the limp bag member (42) the beverage substance (7) is arranged. 46. Drink preparation unit (3) for a system (1) for producing a beverage, in particular according to one of claims 1 to 29, wherein the beverage preparation unit (3) the cartridge receptacle (10) into which the cartridge (2) according to any one of claims 30 can reversibly be used, a cartridge unloading device (34), which causes at least partial transfer of the beverage substance (7) from the reservoir (6) into a mixing chamber (8), and the fluid supply (12), which in the mixing chamber (8) empties. 47. Drink preparation unit (3) according to claim 46, wherein the beverage preparation unit (3) comprises a cooling unit for cooling a fluid which is supplied to the fluid supply (12). 48. A beverage preparation unit (3) according to any one of claims 46 or 47, wherein the cartridge unloader (34) comprises a movable plunger (16) which is insertable on an input side (4) of the cartridge (2) in the cartridge (2) to press the beverage substance (7) on an exit side (5) of the cartridge (2) from the cartridge (2). 49. Drink preparation unit (3) according to claim 48, wherein the beverage preparation unit (3) has a guide unit for motorized supply of the plunger (16) in the cartridge (2), wherein the guide unit the plunger (16) is a straight or curved guide element for inserting the Tappet (16) and wherein the guide unit comprises an electric or hydraulic linear motor and in particular a spindle drive. 50. A beverage preparation unit (3) according to any one of claims 46 to 49, wherein the beverage preparation unit (3) comprises the mixing chamber (8), wherein the mixing chamber (8) from the remaining beverage preparation unit (3) is removable. 51. A process for producing a beverage, in particular with a system (1) according to any one of claims 1 to 29, comprising the following steps: Inserting a cartridge (2) filled with a beverage substance (7) into a cartridge receptacle (10) of a beverage preparation unit (3), transferring the beverage substance (7) from a reservoir (6) of the cartridge (2) into a mixing chamber (8) by means of a Cartridge unloading device (34), feeding a fluid into the mixing chamber (8) by means of a fluid supply (12),  Discharging the beverage produced in the mixing chamber (8) by mixing the beverage substance (7) with the fluid by means of a beverage outlet (11). 52. The method of claim 51, wherein the beverage substance (7) by a piston (13) from the reservoir (6) in the mixing chamber (8) is pressed by the piston (13) by means of the cartridge unloading device (34) from a starting position an end position is moved. 53. The method of claim 52, wherein the piston (13) by means of a cartridge unloading device (34) in the form of a piston (13) acting on the plunger (16) or by compressed air is moved. 54. The method of claim 53, wherein the plunger (16) is motor driven introduced into the cartridge (2) by means of a guide unit and acts on the piston (13) to move the piston (13) from the starting position to the end position. 55. The method of claim 54, wherein the beverage substance (7) by compressed air or negative pressure from the reservoir (6) into the mixing chamber (8) is transferred. 56. The method according to any one of claims 51 to 55, wherein the fluid is cooled and / or carbonized prior to feeding into the mixing chamber (8). 57. The method according to any one of claims 51 to 56, wherein upon insertion of the plunger (16) into the cartridge (2) a cartridge (2) sealing sealing element (18, 19) is opened, wherein the sealing element (18, 19) preferably a sealing foil which is torn by the plunger (16). 58. The method according to any one of claims 51 to 57, wherein by transferring the beverage substance (7) in the direction of the mixing chamber (8), a further sealing element (18, 19) which between the reservoir (6) and the mixing chamber (8), is opened, wherein the further sealing element (18, 19) preferably comprises a sealing film which is torn by the pressure increase in the reservoir (6). 59. Method according to one of claims 51 to 58, wherein the cartridge unloading device (34) acts on a shielding element (40) arranged inside the cartridge (2) in order to convey the beverage substance (7) from the reservoir (6) into the mixing chamber ( 8), wherein the shielding member (40) is meanwhile folded or compressed.